adjective

• Relating to or denoting vision in dim light, believed to involve chiefly the rods of the retina.

  Often contrasted with photopic

  ‘Visual pigments have also evolved to perform specialized functions, such as color vision and scotopic vision.’

  More example sentences

  • ‘The photopic curve is for normal vision, and the scotopic curve is for eyes that are adjusted to the dark.’
  • ‘Using an extremely low-light projector and other devices, we get demonstrations of night adaptation, blind spots, mesopic and scotopic vision, peripheral vision, autokinesis and flash blindness.’
  • ‘The low dark noise of rods allows the scotopic system to reliably detect a flash eliciting less than 10 effectively absorbed photons.’
  • ‘Honeybees, forced to feed under dim light levels are colour-blind just as humans are under scotopic conditions’